when I was young, I knew what a jerk was, and I kinda knew what the phrase f**k off meant, so when I got angry at someone I would call them a jerk off, not knowing it was another term for masturbation
A childhood belief about swearing

others believed things like this
- I used to think that when I saw someone on TV whom I knew to be dead , it meant that it was his or her ghost.— Sophie
- I used to believe that the term "being mugged" meant someone beat someone else with a coffee mug.— Matt Thiel
- I thought the phrase "At one's disposal" meant you should dispose of the person or thing.— Geirskogul
- I thought that hydrogen was pure water (since I knew hydro- meant water) and H2O was impure some how— Hexetic
- I used to think that an imbecile was some type of seal, before knowing that it meant someone stupid.Anon
- When we were young, we used to call a woman's breasts, 'Hum Hums'— Steve Haughton